Intangible Assets - Finite-lived Intangible Assets Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Finite-lived Intangible Assets, Gross [Roll Forward]
Intangible assets, beginning of period			$ 35,240	$ 35,240	$ 35,240
Additions			0
Total intangible assets, end of period	$ 35,240		35,240		35,240
Accumulated Amortization [Roll Forward]
Accumulated amortization, January 1			(33,576)	(32,055)	(32,055)
Current year amortization	(310)	$ (381)	(620)	$ (761)	(1,521)
Total accumulated amortization	(34,196)		(34,196)		(33,576)
Net intangible assets
Net intangible assets, end of year	1,044		1,044		1,664
Infinite-lived intangible assets	6,892		6,892		6,892
Total net intangible assets	$ 7,936		$ 7,936		$ 8,556